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Self-normalized tests for multistep conditional predictive ability

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  • Qitong Chen
  • Shuwen Lai

Abstract

This paper proposes self-normalized tests for multistep conditional predictive ability in forecast comparison. By normalizing the sample mean of the transformed loss differential using functionals of its cumulative sum (CUSUM) process, specifically an adjusted-range normalizer for scalars and a matrix normalizer for vectors, our approach avoids direct estimation of the long-run covariance matrix. Consequently, it eliminates the need for the ad hoc bandwidth, kernel, and lag-truncation choices required by traditional methods. We establish the asymptotic theory for these statistics, deriving pivotal null limiting distributions and proving test consistency. Monte Carlo simulations show that the proposed tests effectively mitigate the finite-sample size distortions associated with traditional heteroskedasticity and autocorrelation consistent (HAC) methods, while retaining strong empirical power against conditional predictability alternatives.

Suggested Citation

  • Qitong Chen & Shuwen Lai, 2026. "Self-normalized tests for multistep conditional predictive ability," Papers 2605.07404, arXiv.org.
    • Handle: RePEc:arx:papers:2605.07404
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    File URL: http://arxiv.org/pdf/2605.07404
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